been over the usual suspects...cap, hoses, all look right. Wondering if seafoam dislodged something and clogged an orifice. My Acura TL has a small EGR port that is vulnerable, just wondering if the 3.4 has something similar.

Oh yeah...thanks for the welcome, glad to be on board. Looks like a great forum!

well so far the CEL hasn't come back on (and hopefully won't) since I reset it. Maybe the seafoam treatment did it, don't know for sure. I did inspect the gas cap and wiped of the sealing surfaces just in case but nothing significant came off.